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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Use of geomembranes to control pavement movements from expansive soils</title>
      <link>https://trid.trb.org/View/1204234</link>
      <description><![CDATA[On the Sunraysia Highway, in northwestern Victoria, vertical moisture barrier trials were carried out during a reconstruction of the pavement. The cause of pavement damage was a combination of the semi-arid climate, a highly expansive subgrade, and a roadside plantation.  A plastic geomembrane was used as a vertical moisture barrier, installed to a depth of 1.8 m below verge level in the first attempt.  Proving inadequate, a deeper barrier of at least 2.5 m below verge level was installed, which greatly reduced seasonal movements and pavement damage.  Further trials involving geomembranes have commenced on the Henty Highway, near Dooen, using an improved method of installation.]]></description>
      <pubDate>Fri, 24 Aug 2012 19:49:01 GMT</pubDate>
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      <title>Paving fabric seal design and performance on Australian roads</title>
      <link>https://trid.trb.org/View/1099182</link>
      <description><![CDATA[Australian road authorities began trials incorporating paving fabrics in road construction in the 1980s, continuing through to the late 1990s.  The focus of this paper is the assessment of performance based on design considerations, selection criteria, installation history and overall performance.  Criteria for assessment took into account treatment selection considered in terms of the performance, pavement structural condition and existing surfacing condition and paving fabric use, in situations where the pavements have serious functional damage.  Recent performance assessment comprised visual inspection and interviews with paving fabric treatment selectors from various road authorities to confirm or otherwise, situations where  paving fabrics has been of benefit.  Ultimately by taking into account the benefits and limitations of paving fabrics performance, design criteria  can be further refined in identifying treatments where selection of paving fabric treatment will return greater benefits. (a) For the covering entry of this conference, please see ITRD abstract no. E220163]]></description>
      <pubDate>Fri, 15 Apr 2011 13:19:20 GMT</pubDate>
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      <title>Performance assessment of paving fabric applications on Australian roads</title>
      <link>https://trid.trb.org/View/914611</link>
      <description><![CDATA[Australian road authorities began trials incorporating paving fabrics placed in a variety of applications in road construction in the 1980’s, continuing through to the late 1990s and have since become a standard selection  of treatment.  The focus of this paper is the documentation of paving fabric surfacing applications with assessment of performance based on design  considerations, selection criteria, installation history and overall performance.  Criteria for assessment took into account treatment selection considered in terms of the performance, pavement structural condition and existing surfacing condition and use in situations where the pavements have  serious functional damage.  Recent performance assessment comprised visual inspection and interviews with paving fabric treatment selectors from various road authorities to confirm or otherwise, situations where paving fabrics has been of benefit.  The assessment involved reviewing existing trials and specified installations for design concepts, selection criteria, the asset owner’s view of the expected performance and historical records of road authorities sealing.  Over twenty sites in Victoria, South Australia, Western Australia, New South Wales and Queensland are included in the project. (a) For the covering record of the conference, please refer to ITRD no. E218387.]]></description>
      <pubDate>Tue, 23 Mar 2010 09:14:08 GMT</pubDate>
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      <title>GEOSYNTHETIC DAMAGE - FROM LABORATORY TO FIELD</title>
      <link>https://trid.trb.org/View/645770</link>
      <description><![CDATA[Geosynthetic damage has been a major concern since the introduction of geotextiles for civil engineering applications. Mechanical damage occurs to a large extent during the installation and construction phase, as the mechanical impact on the geosynthetics during installation and compaction can be significantly higher than during the service lifetime. The type of damage is divided into six categories: abrasion, splitting, puncturing, stress rupture, fibre cutting and tearing. There are a number of laboratory tests relevant to the evaluation of damage susceptibility. However no single laboratory test has so far been developed which is capable of giving a complete basis for damage evaluation. A combination of different test methods seem to be a realistic approach in most cases and in specific cases full scale field trials can be carried out to provide the required information. The level for evaluation may vary from specification of characteristics based on index tests to full scale trials combined with control during and after construction. Specific examples of testing and evaluation of geosynthetics damage are discussed in greater length for two applications: separation function for road and filtration function for revetment structures.  For the covering abstract see ITRD E117244.]]></description>
      <pubDate>Wed, 11 Jun 2003 00:00:00 GMT</pubDate>
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      <title>INSTALLATION DAMAGE TRIALS ON GEOTEXTILES</title>
      <link>https://trid.trb.org/View/415531</link>
      <description><![CDATA[This report presents the results of a study into the mechanical damage inflicted on geotextiles when such materials are installed in compacted backfills.  This type of information is essential when designing geotextiles to act as separators or reinforcements to soils. A repeatable test method has been developed at the TRL that simulates the damage inflicted on geotextiles placed in compacted fill under conditions commonly found on construction sites.  The report provides details of the method and the results of trials undertaken on five geotextiles and three types of soil.  The severity of damage inflicted on a geotextile was dependent on the type of backfill and the intensity of the applied compactive effort. The damage reduced the tensile strength of the geotextiles, but the short term modulus was not substantially affected.  (A)]]></description>
      <pubDate>Tue, 28 Mar 1995 00:00:00 GMT</pubDate>
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    <item>
      <title>GEOTEXTILES IN AGGRESSIVE SOILS</title>
      <link>https://trid.trb.org/View/377432</link>
      <description><![CDATA[This paper discusses causes of damage to geotextiles, describes a test procedure for evaluating the damage, and presents the results of tests to validate the procedure. The principal damage identified so far was found to be generated during installation, due to compaction of the surrounding soil; it consisted of cuts, frays, and general abrasion, and was similar for all sites examined. Its extent and the resulting reduction in strength depended on the coarseness of the fill and the intensity of compaction; the stiffness of the materials was not affected.  The method of undertaking damage trials, developed by the Transport and Road Research Laboratory (TRRL) and ERA Technology Ltd., is described and will be proposed as a standard method of evaluation. It requires definition of: (1) the specimen are; (2) the backfill; (3) the means of compaction and extraction of the materials.  Parallel validation tests were performed in quarry conditions, and at trench and railway sites.  Quantitative assessment after installation and extraction was made by counting the number of damage sites over a measured area; samples were then cut for examination by optical and scanning microscopy.  Two series of tests were completed, using two different methods of compacting the backfills.  Further work is necessary, to determine how tensile tests should be made on severely damaged materials.]]></description>
      <pubDate>Thu, 01 Jul 1993 00:00:00 GMT</pubDate>
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